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কোন সংখ্যাটি অমূলদ?

A√18
B√64
C√49
D√81
Answer & Solution
Correct answer: A. √18
49, 64 এবং 81 এর বর্গমূল হল পূর্ণসংখ্যা; √18 = 3√2 অযৌক্তিক।
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